ES2369134T3 - ANTENNA PROVISION FOR THE RECEPTION OF SIGNS ISSUED BY A GEOSTATIONARY SATELLITE. - Google Patents
ANTENNA PROVISION FOR THE RECEPTION OF SIGNS ISSUED BY A GEOSTATIONARY SATELLITE. Download PDFInfo
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- ES2369134T3 ES2369134T3 ES00401511T ES00401511T ES2369134T3 ES 2369134 T3 ES2369134 T3 ES 2369134T3 ES 00401511 T ES00401511 T ES 00401511T ES 00401511 T ES00401511 T ES 00401511T ES 2369134 T3 ES2369134 T3 ES 2369134T3
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- 125000004122 cyclic group Chemical group 0.000 claims 1
- 230000010287 polarization Effects 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/16—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
- G01S3/44—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the adjustment being varied periodically or continuously until it is halted automatically when the desired condition is attained
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
- H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
Abstract
Disposición de antena de recepción de las señales emitidas por un satélite geoestacionario, del tipo que comprende un reflector que puede ser inmóvil, un dispositivo fuente y un dispositivo de tratamiento de las señales recibidas por el dispositivo fuente, caracterizada porque el dispositivo fuente comprende unos medios de seguimiento automático (3, 11) del satélite que se desvía de su posición inicial en una órbita inclinada, comprendiendo los medios de seguimiento mencionados anteriormente una pluralidad de fuentes individuales (5, 6, 7) dispuestas a una distancia predeterminada entre sí en un plano vertical que contiene el punto focal de la antena, de tal modo que se cree una multitud de haces principales que se solapan y porque entre la pluralidad de las fuentes individuales (5, 6, 7), la fuente que produce la señal de salida más grande es la que se conecta al dispositivo de tratamiento de las señales recibidas por la antena.Array of reception antenna of the signals emitted by a geostationary satellite, of the type comprising a reflector that can be stationary, a source device and a device for processing the signals received by the source device, characterized in that the source device comprises means automatic tracking (3, 11) of the satellite that deviates from its initial position in an inclined orbit, the aforementioned tracking means comprising a plurality of individual sources (5, 6, 7) arranged at a predetermined distance from each other in a vertical plane that contains the focal point of the antenna, so that a multitude of main beams are created that overlap and because between the plurality of the individual sources (5, 6, 7), the source that produces the output signal The largest is the one that connects to the device for processing the signals received by the antenna.
Description
Disposición de antena para la recepción de señales emitidas por un satélite geoestacionario Antenna arrangement for receiving signals emitted by a geostationary satellite
La presente invención se refiere a una disposición de antena para la recepción de señales emitidas por un satélite geoestacionario, del tipo que comprende un reflector, un dispositivo fuente y un dispositivo de tratamiento de las señales recibidas por el dispositivo fuente. The present invention relates to an antenna arrangement for the reception of signals emitted by a geostationary satellite, of the type comprising a reflector, a source device and a device for processing the signals received by the source device.
Para que los satélites geoestacionarios puedan permanecer en su posición inicial durante un tiempo lo más largo posible, se equipan con unos medios que se adaptan para corregir sus desviaciones respecto a dicha posición, permaneciendo fija la antena. Ahora bien, tras un cierto tiempo de funcionamiento, la energía de dichos medios embarcados es insuficiente como para evitar las desviaciones del satélite y el desplazamiento en una órbita inclinada del mismo. Por consiguiente, la calidad de la recepción de las señales por la antena se degrada progresivamente y el satélite queda finalmente inutilizable. In order for geostationary satellites to remain in their initial position for as long as possible, they are equipped with means that are adapted to correct their deviations from said position, while the antenna remains fixed. However, after a certain period of operation, the energy of said embarked means is insufficient to avoid the deviations of the satellite and the displacement in an inclined orbit of the same. Consequently, the quality of the reception of the signals by the antenna is progressively degraded and the satellite is finally unusable.
El documento W09630962 indica que un satélite que se desvía de su órbita geoestacionaria presenta una trayectoria aparente periódica más o menos compleja según el punto de la tierra desde el que se observa. El documento W09630962 propone aplicar al reflector de la antena un desplazamiento gobernado por unos medios de predicción de la trayectoria aparente del satélite. La puesta en desplazamiento del reflector y los medios de predicción adolecen del inconveniente de introducir un factor de avería adicional que podría impedir prolongar la duración de recepción correcta de las señales emitidas por el satélite si la avería se produjese. Document W09630962 indicates that a satellite that deviates from its geostationary orbit has a more or less complex periodic apparent trajectory according to the point of the earth from which it is observed. Document W09630962 proposes to apply to the reflector of the antenna a displacement governed by means of prediction of the apparent trajectory of the satellite. The displacement of the reflector and the prediction means suffer from the inconvenience of introducing an additional fault factor that could prevent prolonging the duration of correct reception of the signals emitted by the satellite if the fault occurs.
El objetivo de la presente invención (tal como se define en las reivindicaciones) es proponer una disposición de antena que esté en condiciones de prolongar considerablemente el tiempo durante el que la antena pueda recibir correctamente unas señales emitidas por el satélite. The objective of the present invention (as defined in the claims) is to propose an antenna arrangement that is able to considerably prolong the time during which the antenna can correctly receive signals emitted by the satellite.
Para alcanzar dicho objetivo, la disposición de antena según la presente invención se caracteriza porque el dispositivo fuente comprende unos medios de seguimiento automático del satélite desviándose de su posición inicial en una órbita inclinada de tal modo que el reflector pueda permanecer inmóvil. To achieve said objective, the antenna arrangement according to the present invention is characterized in that the source device comprises automatic satellite tracking means deviating from its initial position in an inclined orbit so that the reflector can remain motionless.
Según una característica de la presente invención, los medios de seguimiento mencionados anteriormente comprenden una pluralidad de fuentes individuales dispuestas a una distancia predeterminada entre las mismas en un plano vertical que contenga el punto focal de la antena, de tal modo que se cree una multitud de haces principales que se solapen. According to a feature of the present invention, the aforementioned tracking means comprise a plurality of individual sources arranged at a predetermined distance between them in a vertical plane containing the focal point of the antenna, such that a multitude of main beams that overlap.
La presente invención y otros objetivos, características, detalles y ventajas de la misma se pondrán más claramente de manifiesto en la descripción explicativa siguiente que hace referencia a los dibujos esquemáticos adjuntos que se proporcionan únicamente a título de ejemplo, ilustrando una forma de realización de la presente invención y en los que: The present invention and other objectives, characteristics, details and advantages thereof will be more clearly shown in the following explanatory description which refers to the attached schematic drawings that are provided by way of example only, illustrating an embodiment of the present invention and in which:
La figura 1 es una vista lateral de una disposición de antena según la presente invención. La figura 2 es una vista en la dirección de la flecha F de la figura 1. La figura 3 es una vista a una escala superior de la parte inscrita en un círculo en la figura 1 e indicada con III. La figura 4 representa, en forma de diagrama de bloques, la estructura eléctrica del objeto de la figura 3. Figure 1 is a side view of an antenna arrangement according to the present invention. Figure 2 is a view in the direction of arrow F of Figure 1. Figure 3 is a top-scale view of the part inscribed in a circle in Figure 1 and indicated with III. Figure 4 represents, in the form of a block diagram, the electrical structure of the object of Figure 3.
Tal como se puede observar en las figuras 1 y 2, la disposición de antena 1 según la presente invención comprende un reflector 2 de forma elíptica cuyo eje principal se encuentra en un plano paralelo a la órbita geoestacionaria, según se observa en el punto de recepción y un dispositivo de múltiples fuentes 3 del tipo monobloque, que se sostiene mediante un brazo de soporte 4. En el ejemplo representado, el dispositivo de múltiples fuentes comprende tres fuentes individuales idénticas dispuestas a una cierta distancia entre sí en un plano vertical que comprende el punto focal del reflector de antena de tal modo que se cree un número de haces principales correspondientes, desplazados entre sí en el plano vertical solapándose ampliamente. El número de fuentes individuales y la distancia entre las mismas dependen de la altura de abertura de la antena y de la extensión de la zona de seguimiento que debe efectuar la antena. En efecto, en ciertos casos podría resultar ventajoso o incluso imperativo, por motivos geométricos, no utilizar unas fuentes del tipo corneta clásico, sino otros elementos radiantes, tales como unos elementos del tipo de rejilla impresa o unos elementos similares conocidos en la tecnología de las microondas. En efecto, la utilización y la disposición de una pluralidad de fuentes individuales tienen como objetivo permitir a la antena una recepción de buena calidad de las señales emitidas por el satélite incluso en el caso de que el mismo comience a desviarse de su posición inicial. As can be seen in Figures 1 and 2, the antenna arrangement 1 according to the present invention comprises an elliptical reflector 2 whose main axis is in a plane parallel to the geostationary orbit, as observed at the point of reception and a multi-source device 3 of the monoblock type, which is supported by a support arm 4. In the example shown, the multi-source device comprises three identical individual sources arranged at a certain distance from each other in a vertical plane comprising the focal point of the antenna reflector such that a number of corresponding main beams are created, offset from each other in the vertical plane overlapping widely. The number of individual sources and the distance between them depend on the opening height of the antenna and the extent of the tracking area to be performed by the antenna. Indeed, in certain cases it could be advantageous or even imperative, for geometric reasons, not to use sources of the classical cornet type, but other radiating elements, such as elements of the type of printed grid or similar elements known in the technology of the microwave. In fact, the use and arrangement of a plurality of individual sources are intended to allow the antenna to receive good quality of the signals emitted by the satellite even if it begins to deviate from its initial position.
En el ejemplo representado, el dispositivo de múltiples fuentes 3 se realiza bajo la forma de un dispositivo monobloque 3 y comprende tres fuentes individuales 5, 6, 7 que podrían protegerse mediante una cubierta de protección común 9, tal como se observa en la figura 3. Dicha figura muestra asimismo que las tres fuentes, aunque se encuentran dispuestas en el plano vertical mencionado anteriormente que pasa por el punto focal del reflector 22, presentan un desplazamiento angular apropiado que depende de la extensión del seguimiento. El dispositivo de múltiples fuentes comprende un dispositivo electrónico 11 de selección de fuente cuya función se expondrá a In the example shown, the multi-source device 3 is made in the form of a monobloc device 3 and comprises three individual sources 5, 6, 7 that could be protected by a common protective cover 9, as seen in Figure 3 Said figure also shows that the three sources, although arranged in the vertical plane mentioned above passing through the focal point of the reflector 22, have an appropriate angular displacement that depends on the extent of the tracking. The multi-source device comprises an electronic source selection device 11 whose function will be exposed to
continuación. El dispositivo de selección se asocia a un dispositivo de tratamiento de las señales recibidas por el dispositivo de múltiples fuentes que no se representa. continuation. The selection device is associated with a device for processing the signals received by the device from multiple sources that is not represented.
Haciendo referencia a la figura 4 se da a conocer, a continuación, la estructura del dispositivo de selección. Referring to Figure 4, the structure of the selection device is then disclosed.
Tal como se representa en la figura 4, cada fuente individual 5, 6, 7 es del tipo utilizado en los LNB (Low Noise Bloc As shown in Figure 4, each individual source 5, 6, 7 is of the type used in LNB (Low Noise Bloc
o convertidor de bajo nivel de ruido) y se adapta para recibir unas señales con polarización lineal, a saber, horizontal y vertical, simbolizada con las letras V y H. Cada fuente 5, 6, 7 comprende, de un modo ya conocido de por sí, un conmutador de polarización 12 susceptible de ser accionado por el usuario, asimismo de un modo ya conocido de por sí. De este modo, cada conmutador comprende dos entradas, cada una de ellas asociada a uno de los dos modos de polarización V o H de la señal recibida. La salida del conmutador 12 se conecta a un preamplificador 13. La salida de cada preamplificador se conecta a una entrada de un conmutador de tres posiciones 14, cuya salida 15 se conecta, a través de un amplificador 16, a un mezclador 18 al que se asocian dos osciladores locales 19, 20 que pueden conectarse selectivamente al mezclador con la ayuda de un conmutador de banda de frecuencia 22 permitiendo, de este modo, que la antena funcione o en una banda de frecuencias alta, o en una banda de frecuencias baja. En efecto, el satélite emite con una banda de frecuencias alta comprendida entre los 11,7 GHz y los 12,75 GHz y una banda baja comprendida entre los 10,70 GHz y los 11,70 GHz. Los osciladores locales 19, 20 producen unas señales de, respectivamente, 10,6 GHz y 9,75 GHz. El mezclador 18 se conecta, a través de un amplificador 23, a un detector de potencia 25 cuya salida se conecta a un comparador de potencia 26. El conmutador multiplexor 15 es gobernado por un dispositivo contador 28 que gobierna asimismo el comparador 26. or low noise converter) and adapts to receive signals with linear polarization, namely horizontal and vertical, symbolized with the letters V and H. Each source 5, 6, 7 comprises, in a way already known from yes, a polarization switch 12 capable of being operated by the user, also in a manner already known per se. Thus, each switch comprises two inputs, each associated with one of the two polarization modes V or H of the received signal. The output of switch 12 is connected to a preamp 13. The output of each preamp is connected to an input of a three-position switch 14, whose output 15 is connected, through an amplifier 16, to a mixer 18 to which they associate two local oscillators 19, 20 that can be selectively connected to the mixer with the help of a frequency band switch 22 thus allowing the antenna to operate either in a high frequency band, or in a low frequency band. Indeed, the satellite broadcasts with a high frequency band between 11.7 GHz and 12.75 GHz and a low band between 10.70 GHz and 11.70 GHz. Local oscillators 19, 20 produce signals of, respectively, 10.6 GHz and 9.75 GHz. The mixer 18 is connected, through an amplifier 23, to a power detector 25 whose output is connected to a power comparator 26. The multiplexer switch 15 it is governed by a counter device 28 which also governs comparator 26.
Según la figura 4, la salida de cada amplificador 13 y asimismo a través de la misma, la salida de cada conmutador de polarización 12 se conecta además a una entrada de un selector de fuente individual 30 realizado asimismo bajo la forma de un conmutador cuya salida se conecta, a través de un amplificador 31, a un mezclador 32 asociado a dos osciladores locales 33, 34 susceptibles de conectarse selectivamente al mezclador mediante un conmutador de banda 35. Los osciladores locales 33, 34 producen unas señales de, respectivamente, 10,6 GHz y 9,75 GHz, como los osciladores 19 y 20 y podrían ser idénticos a los mismos, para permitir que la antena funcione en una de las dos bandas alta o baja. La salida del mezclador 32 se conecta, a través de las etapas amplificadoras 36, al borne de salida 37 de la antena conectada a uno o a varios dispositivos de tratamiento de las señales, que no se representan. According to Figure 4, the output of each amplifier 13 and also through it, the output of each polarization switch 12 is further connected to an input of an individual source selector 30 also made in the form of a switch whose output it is connected, through an amplifier 31, to a mixer 32 associated with two local oscillators 33, 34 capable of selectively connecting to the mixer through a band switch 35. Local oscillators 33, 34 produce signals of, respectively, 10, 6 GHz and 9.75 GHz, like oscillators 19 and 20 and could be identical to them, to allow the antenna to operate in one of the two high or low bands. The output of the mixer 32 is connected, through the amplifier stages 36, to the output terminal 37 of the antenna connected to one or several signal processing devices, which are not shown.
Tal como se observa asimismo en la figura 4, la salida 37 de la antena y la salida 38 del comparador 36 se conectan al conmutador de selección de fuente 30 para poder gobernarlo. As can also be seen in Figure 4, the output 37 of the antenna and the output 38 of the comparator 36 are connected to the source selection switch 30 to be able to govern it.
La antena con su dispositivo de múltiples fuentes 3 y el dispositivo electrónico de selección 11 funcionan del modo siguiente: The antenna with its multi-source device 3 and the electronic selection device 11 operate as follows:
Las señales que provienen del satélite son recibidas por cada fuente individual 5, 6, 7 mediante la acción del reflector 2. Los conmutadores de polarización 12 se conmutan de la forma apropiada según que la polarización de las señales recibidas sea horizontal o vertical. El conmutador 14 interroga periódicamente y sucesivamente, bajo el mando del conmutador 28, a las salidas de los tres conmutadores de polarización 12. Por consiguiente, el conmutador 14 transmite sucesivamente la señal de salida de cada fuente individual 5 a 7, mediante la acción del mezclador común 18, al detector de potencia 25. El comparador 26 compara la señal detectada en la posición momentánea del conmutador 14 con las señales que se han detectado anteriormente y representativas de las señales de salida de las otras dos fuentes individuales, que el comparador ha mantenido en memoria. A continuación, el comparador dirige una señal de mando al conmutador de selección 30 para que el mismo se conmute siempre sobre la fuente individual cuya señal de salida sea la más grande entre las señales producidas por las tres fuentes sucesivamente interrogadas por el conmutador 14. Cuando se utilizan unos elementos radiantes del tipo rejilla, podría plantearse una conmutación suave y/o una combinación de fase de los elementos radiantes individuales para crear unas funciones de iluminación apropiadas, probando la deflexión pretendida de los haces de recepción. The signals coming from the satellite are received by each individual source 5, 6, 7 by the action of the reflector 2. The polarization switches 12 are switched appropriately according to whether the polarization of the received signals is horizontal or vertical. The switch 14 periodically and successively interrogates, under the command of the switch 28, the outputs of the three polarization switches 12. Consequently, the switch 14 successively transmits the output signal of each individual source 5 to 7, by the action of the common mixer 18, to the power detector 25. The comparator 26 compares the signal detected in the momentary position of the switch 14 with the signals that have been previously detected and representative of the output signals of the other two individual sources, which the comparator has kept in memory Next, the comparator directs a command signal to the selection switch 30 so that it always switches over the individual source whose output signal is the largest among the signals produced by the three sources successively interrogated by the switch 14. When If radiating elements of the grid type are used, a soft switching and / or a phase combination of the individual radiating elements could be considered to create appropriate lighting functions, testing the intended deflection of the receiving beams.
Para facilitar el posicionamiento inicial de la disposición de antena, el número de fuentes individuales es impar y el conmutador de selección 30 se conmutará, en función de la señal tomada en la salida 37, sobre la fuente buena en función de la posición del satélite en el momento de la instalación de la antena. La extensión del seguimiento se optimiza en relación con el desplazamiento norte-sur del satélite. A continuación, el enclavamiento del conmutador de selección 30 sobre la fuente seleccionada se desbloquea y el conjunto funciona de un modo automático interrogando cíclicamente las diferentes fuentes. To facilitate the initial positioning of the antenna arrangement, the number of individual sources is odd and the selection switch 30 will be switched, depending on the signal taken at output 37, over the good source depending on the position of the satellite in the time of installation of the antenna. The extension of the tracking is optimized in relation to the north-south displacement of the satellite. Then, the interlocking of the selection switch 30 on the selected source is unlocked and the assembly operates automatically by interrogating the different sources cyclically.
Debe destacarse que el reflector presenta la forma elíptica susodicha con el eje principal alineado con la órbita estacionaria porque en dichas condiciones los haces individuales son más grandes en el plano vertical que en el horizontal, lo que permite minimizar el número de fuentes individuales para una ganancia pretendida predeterminada. It should be noted that the reflector has the above-mentioned elliptical shape with the main axis aligned with the stationary orbit because in these conditions the individual beams are larger in the vertical plane than in the horizontal, which allows to minimize the number of individual sources for a gain intended default.
Esta lista de referencias mencionadas por el solicitante pretende únicamente ayudar al lector y no forma parte del documento de patente europea. Si bien la misma se ha preparado con el máximo esmero, no puede excluirse la 5 posibilidad de que contenga errores u omisiones y la Oficina Europea de Patentes declina toda responsabilidad al respecto. This list of references mentioned by the applicant is intended only to help the reader and is not part of the European patent document. Although it has been prepared with the utmost care, the possibility that it contains errors or omissions cannot be excluded and the European Patent Office declines all responsibility in this regard.
Documentos de patente mencionados en la descripción Patent documents mentioned in the description
10 x WO 9630962 A 10 x WO 9630962 A
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9906961A FR2794573B1 (en) | 1999-06-02 | 1999-06-02 | ANTENNA ARRANGEMENT FOR RECEIVING SIGNALS TRANSMITTED BY A GEOSTATIONARY SATELLITE |
| FR9906961 | 1999-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2369134T3 true ES2369134T3 (en) | 2011-11-25 |
Family
ID=9546288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES00401511T Expired - Lifetime ES2369134T3 (en) | 1999-06-02 | 2000-05-29 | ANTENNA PROVISION FOR THE RECEPTION OF SIGNS ISSUED BY A GEOSTATIONARY SATELLITE. |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US6504504B1 (en) |
| EP (1) | EP1058125B1 (en) |
| JP (1) | JP2001016014A (en) |
| KR (1) | KR100767872B1 (en) |
| CN (1) | CN1168183C (en) |
| AT (1) | ATE515814T1 (en) |
| CA (1) | CA2311150C (en) |
| EA (1) | EA003493B1 (en) |
| ES (1) | ES2369134T3 (en) |
| FR (1) | FR2794573B1 (en) |
| HU (1) | HU226539B1 (en) |
| NO (1) | NO20002814L (en) |
| PL (1) | PL198216B1 (en) |
| TR (1) | TR200001613A3 (en) |
| TW (1) | TW449660B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3879553B2 (en) | 2002-03-20 | 2007-02-14 | 三菱自動車工業株式会社 | Vehicle occupant protection device |
| US7262732B2 (en) * | 2004-11-19 | 2007-08-28 | Motia Inc. | Method and apparatus for fast satellite acquisition via signal identification |
| US8619639B2 (en) * | 2007-07-06 | 2013-12-31 | Lantiq Deutschland Gmbh | Power detector radio frequency multiplexer |
| EP2104179B1 (en) | 2008-03-20 | 2016-02-24 | SES Astra S.A. | Satellite transceiver |
| US20110032143A1 (en) * | 2009-08-05 | 2011-02-10 | Yulan Sun | Fixed User Terminal for Inclined Orbit Satellite Operation |
| CN108352619B (en) * | 2015-10-26 | 2020-12-08 | 华为技术有限公司 | Reflector antenna and antenna alignment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2578058B1 (en) * | 1985-02-25 | 1992-10-30 | Dx Antenna | METHOD AND DEVICE FOR TRACKING A COMMUNICATION SATELLITE |
| US5347286A (en) * | 1992-02-13 | 1994-09-13 | Trimble Navigation Limited | Automatic antenna pointing system based on global positioning system (GPS) attitude information |
| US5592176A (en) * | 1995-03-30 | 1997-01-07 | Scientific-Atlanta, Inc. | Tracking system for tracking a moving signal source |
| US5701591A (en) * | 1995-04-07 | 1997-12-23 | Telecommunications Equipment Corporation | Multi-function interactive communications system with circularly/elliptically polarized signal transmission and reception |
| US5929808A (en) * | 1997-10-14 | 1999-07-27 | Teledesic Llc | System and method for the acquisition of a non-geosynchronous satellite signal |
-
1999
- 1999-06-02 FR FR9906961A patent/FR2794573B1/en not_active Expired - Fee Related
-
2000
- 2000-05-29 EP EP00401511A patent/EP1058125B1/en not_active Expired - Lifetime
- 2000-05-29 ES ES00401511T patent/ES2369134T3/en not_active Expired - Lifetime
- 2000-05-29 AT AT00401511T patent/ATE515814T1/en not_active IP Right Cessation
- 2000-05-30 CA CA002311150A patent/CA2311150C/en not_active Expired - Fee Related
- 2000-05-31 HU HU0002079A patent/HU226539B1/en not_active IP Right Cessation
- 2000-05-31 NO NO20002814A patent/NO20002814L/en not_active Application Discontinuation
- 2000-05-31 US US09/584,102 patent/US6504504B1/en not_active Expired - Fee Related
- 2000-06-01 PL PL340445A patent/PL198216B1/en not_active IP Right Cessation
- 2000-06-01 JP JP2000164883A patent/JP2001016014A/en active Pending
- 2000-06-01 EA EA200000482A patent/EA003493B1/en not_active IP Right Cessation
- 2000-06-01 KR KR1020000029868A patent/KR100767872B1/en not_active IP Right Cessation
- 2000-06-02 CN CNB001063936A patent/CN1168183C/en not_active Expired - Fee Related
- 2000-06-02 TR TR2000/01613A patent/TR200001613A3/en unknown
- 2000-07-25 TW TW089110694A patent/TW449660B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CA2311150A1 (en) | 2000-12-02 |
| PL340445A1 (en) | 2000-12-04 |
| EP1058125B1 (en) | 2011-07-06 |
| NO20002814L (en) | 2000-12-04 |
| HU226539B1 (en) | 2009-03-30 |
| KR20010007160A (en) | 2001-01-26 |
| KR100767872B1 (en) | 2007-10-17 |
| ATE515814T1 (en) | 2011-07-15 |
| CN1168183C (en) | 2004-09-22 |
| CA2311150C (en) | 2006-05-09 |
| NO20002814D0 (en) | 2000-05-31 |
| FR2794573B1 (en) | 2004-09-24 |
| TW449660B (en) | 2001-08-11 |
| JP2001016014A (en) | 2001-01-19 |
| PL198216B1 (en) | 2008-06-30 |
| EA003493B1 (en) | 2003-06-26 |
| TR200001613A2 (en) | 2001-01-22 |
| EA200000482A3 (en) | 2001-02-26 |
| HU0002079D0 (en) | 2000-08-28 |
| TR200001613A3 (en) | 2001-01-22 |
| EA200000482A2 (en) | 2000-12-25 |
| EP1058125A1 (en) | 2000-12-06 |
| FR2794573A1 (en) | 2000-12-08 |
| CN1276635A (en) | 2000-12-13 |
| HUP0002079A2 (en) | 2001-03-28 |
| US6504504B1 (en) | 2003-01-07 |
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